electron radius

electron radius

[i′lek‚trän ′rād·ē·əs] (physics) The classical value r of 2.8179403 × 10-13 centimeter for the radius of an electron; obtained by equating mc 2 for the electron to e 2/ r, where e and m are the charge and mass of the electron respectively; any classical model for an electron will have approximately this radius.